372
FNCA52 TJSJ 081930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST WED APR 8 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-090800-
SOUTHEAST COASTAL PLAINS-
330 PM AST WED APR 8 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 10 10
TEMP (24H TREND) 71 (-2) 88 (+2) 71 88
RH % (24H TREND) 93 (+3) 53 (-8) 90 52
WIND 20FT/EARLY(MPH) E 11 E 14 E 12 E 14
WIND 20FT/LATE(MPH) E 11 SE 14 NE 10 SE 14
MIXING HGT(FT-AGL/MSL) 4340 4910
TRANSPORT WND (MPH) E 15 E 15
VENT RATE (KT-FT) 56420 63830
DISPERSION 5 5
DSI 4 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-090800-
SOUTHERN HILLS-
330 PM AST WED APR 8 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 30 0 20
TEMP (24H TREND) 68 (-3) 84 (+3) 67 84
RH % (24H TREND) 97 (+4) 63 (-8) 97 64
WIND 20FT/EARLY(MPH) E 11 E 11 E 10 E 11
WIND 20FT/LATE(MPH) E 11 SE 11 E 10 SE 12
MIXING HGT(FT-AGL/MSL) 5090 5390
TRANSPORT WND (MPH) E 15 E 15
VENT RATE (KT-FT) 66170 70070
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-090800-
NORTH COASTAL PLAINS-
330 PM AST WED APR 8 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 40 10 20
TEMP (24H TREND) 70 (-2) 88 (0) 70 88
RH % (24H TREND) 99 (+4) 60 (-4) 98 61
WIND 20FT/EARLY(MPH) SE 11 E 13 E 12 E 12
WIND 20FT/LATE(MPH) E 10 E 16 E 11 E 16
MIXING HGT(FT-AGL/MSL) 4360 4960
TRANSPORT WND (MPH) E 14 SE 14
VENT RATE (KT-FT) 52320 59520
DISPERSION 5 5
DSI 4 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-090800-
NORTHERN HILLS-
330 PM AST WED APR 8 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 10 60 0 50
TEMP (24H TREND) 68 (-3) 88 (+1) 68 87
RH % (24H TREND) 98 (+4) 60 (-3) 98 61
WIND 20FT/EARLY(MPH) SE 9 E 11 E 10 E 10
WIND 20FT/LATE(MPH) E 8 E 13 E 9 E 13
MIXING HGT(FT-AGL/MSL) 5280 5330
TRANSPORT WND (MPH) E 12 SE 10
VENT RATE (KT-FT) 52800 47970
DISPERSION 5 5
DSI 2 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-090800-
WEST COAST-
330 PM AST WED APR 8 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 0 50 30 50
TEMP (24H TREND) 71 (-1) 89 (+1) 70 88
RH % (24H TREND) 98 (+5) 60 (-5) 96 60
WIND 20FT/EARLY(MPH) E 11 E 13 E 10 E 12
WIND 20FT/LATE(MPH) E 12 E 12 E 10 E 14
MIXING HGT(FT-AGL/MSL) 4690 4840
TRANSPORT WND (MPH) E 10 SE 9
VENT RATE (KT-FT) 42210 38720
DISPERSION 5 5
DSI 4 5 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-090800-
EASTERN INTERIOR-
330 PM AST WED APR 8 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 30 10
TEMP (24H TREND) 70 (-2) 85 (+1) 69 85
RH % (24H TREND) 100 (+5) 63 (-6) 99 64
WIND 20FT/EARLY(MPH) SE 12 SE 12 E 11 E 12
WIND 20FT/LATE(MPH) E 11 SE 13 E 11 E 12
MIXING HGT(FT-AGL/MSL) 4870 5710
TRANSPORT WND (MPH) E 15 SE 14
VENT RATE (KT-FT) 63310 68520
DISPERSION 5 5
DSI 4 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-090800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST WED APR 8 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 30 10
TEMP (24H TREND) 67 (-3) 81 (+3) 67 81
RH % (24H TREND) 100 (+2) 70 (-8) 100 71
WIND 20FT/EARLY(MPH) E 10 SE 11 E 9 E 11
WIND 20FT/LATE(MPH) E 10 SE 12 E 8 E 11
MIXING HGT(FT-AGL/MSL) 3620 4430
TRANSPORT WND (MPH) E 15 SE 16
VENT RATE (KT-FT) 47060 62020
DISPERSION 5 5
DSI 6 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-090800-
CENTRAL MOUNTAIN RANGE-
330 PM AST WED APR 8 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE NONE TSTMS NONE SHOWERS
CHANCE PRECIP (%) 0 60 0 60
TEMP (24H TREND) 66 (-3) 84 (+3) 65 84
RH % (24H TREND) 98 (+3) 64 (-7) 99 64
WIND 20FT/EARLY(MPH) SE 6 SE 9 E 6 E 9
WIND 20FT/LATE(MPH) E 6 SE 9 E 6 E 9
MIXING HGT(FT-AGL/MSL) 5800 5780
TRANSPORT WND (MPH) E 12 SE 9
VENT RATE (KT-FT) 58000 46240
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-090800-
CAYEY MOUNTAIN RANGE-
330 PM AST WED APR 8 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 30 0
TEMP (24H TREND) 68 (-2) 81 (+3) 68 80
RH % (24H TREND) 100 (+2) 71 (-7) 100 72
WIND 20FT/EARLY(MPH) E 9 E 10 E 9 E 10
WIND 20FT/LATE(MPH) E 9 SE 10 E 8 E 10
MIXING HGT(FT-AGL/MSL) 4210 4980
TRANSPORT WND (MPH) E 15 E 16
VENT RATE (KT-FT) 54730 69720
DISPERSION 5 5
DSI 5 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-090800-
VIEQUES-
330 PM AST WED APR 8 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 30 10
TEMP (24H TREND) 73 (-2) 85 (0) 72 85
RH % (24H TREND) 94 (+4) 62 (-4) 94 62
WIND 20FT/EARLY(MPH) E 13 E 14 E 13 E 13
WIND 20FT/LATE(MPH) E 13 E 14 E 14 E 13
MIXING HGT(FT-AGL/MSL) 2750 3170
TRANSPORT WND (MPH) E 15 E 17
VENT RATE (KT-FT) 35750 47550
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-090800-
CULEBRA-
330 PM AST WED APR 8 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 30 10
TEMP (24H TREND) 74 (-2) 86 (0) 74 86
RH % (24H TREND) 92 (+3) 61 (-8) 94 63
WIND 20FT/EARLY(MPH) E 13 E 14 E 13 E 14
WIND 20FT/LATE(MPH) E 13 E 14 E 14 E 14
MIXING HGT(FT-AGL/MSL) 2620 3140
TRANSPORT WND (MPH) E 17 E 18
VENT RATE (KT-FT) 39300 50240
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-090800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST WED APR 8 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
PRECIP TYPE NONE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 0 20 30 10
TEMP (24H TREND) 72 (-2) 89 (+2) 71 89
RH % (24H TREND) 95 (+3) 50 (-10) 93 50
WIND 20FT/EARLY(MPH) E 14 E 18 E 13 E 17
WIND 20FT/LATE(MPH) E 16 SE 17 E 14 SE 20
MIXING HGT(FT-AGL/MSL) 4690 5110
TRANSPORT WND (MPH) E 18 E 17
VENT RATE (KT-FT) 75040 76650
DISPERSION 5 5
DSI 5 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-090800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST WED APR 8 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 20 20
TEMP (24H TREND) 73 (-3) 85 (+1) 73 85
RH % (24H TREND) 95 (+6) 62 (-6) 95 61
WIND 20FT/EARLY(MPH) E 13 E 16 E 13 E 16
WIND 20FT/LATE(MPH) E 13 E 14 E 14 E 14
MIXING HGT(FT-AGL/MSL) 2690 3140
TRANSPORT WND (MPH) E 16 E 20
VENT RATE (KT-FT) 37660 53380
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-090800-
ST CROIX-
330 PM AST WED APR 8 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 20 30
TEMP (24H TREND) 74 (-2) 86 (+1) 72 86
RH % (24H TREND) 93 (+3) 63 (-7) 94 63
WIND 20FT/EARLY(MPH) E 14 E 14 E 14 E 14
WIND 20FT/LATE(MPH) E 14 E 13 E 14 E 14
MIXING HGT(FT-AGL/MSL) 4140 4750
TRANSPORT WND (MPH) E 17 E 21
VENT RATE (KT-FT) 62100 85500
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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